<title>约瑟夫游戏</title><link href="http://hzoi.com/tomorrow.css" rel="stylesheet"><div class="ui existing segment"><pre><code><span class="pl-cp">#include</span><span class="pl-cpf">&lt;cstdio&gt;</span><span class="pl-cp"></span>
<span class="pl-k">struct</span> <span class="pl-n">P</span><span class="pl-p">{</span>
        <span class="pl-kt">int</span> <span class="pl-n">l</span><span class="pl-p">,</span><span class="pl-n">r</span><span class="pl-p">;</span>
<span class="pl-p">};</span>
<span class="pl-n">P</span> <span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-mi">3005</span><span class="pl-p">];</span>
<span class="pl-kt">int</span> <span class="pl-nf">main</span><span class="pl-p">(){</span>
        <span class="pl-n">freopen</span><span class="pl-p">(</span><span class="pl-s">&quot;joseph.in&quot;</span><span class="pl-p">,</span><span class="pl-s">&quot;r&quot;</span><span class="pl-p">,</span><span class="pl-n">stdin</span><span class="pl-p">);</span>
        <span class="pl-n">freopen</span><span class="pl-p">(</span><span class="pl-s">&quot;joseph.out&quot;</span><span class="pl-p">,</span><span class="pl-s">&quot;w&quot;</span><span class="pl-p">,</span><span class="pl-n">stdout</span><span class="pl-p">);</span>
        <span class="pl-kt">int</span> <span class="pl-n">n</span><span class="pl-p">,</span><span class="pl-n">m</span><span class="pl-p">,</span><span class="pl-n">now_n</span><span class="pl-p">;</span>
        <span class="pl-n">scanf</span><span class="pl-p">(</span><span class="pl-s">&quot;%d%d&quot;</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">n</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">m</span><span class="pl-p">);</span>
        <span class="pl-n">now_n</span><span class="pl-o">=</span><span class="pl-n">n</span><span class="pl-p">;</span>
        <span class="pl-k">for</span><span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">i</span><span class="pl-o">=</span><span class="pl-mi">1</span><span class="pl-p">;</span><span class="pl-n">i</span><span class="pl-o">&lt;=</span><span class="pl-n">n</span><span class="pl-p">;</span><span class="pl-n">i</span><span class="pl-o">++</span><span class="pl-p">){</span>
                <span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">].</span><span class="pl-n">l</span><span class="pl-o">=</span><span class="pl-n">i</span><span class="pl-o">+</span><span class="pl-mi">1</span><span class="pl-o">&lt;=</span><span class="pl-n">n</span><span class="pl-o">?</span><span class="pl-n">i</span><span class="pl-o">+</span><span class="pl-mi">1</span><span class="pl-o">:</span><span class="pl-mi">1</span><span class="pl-p">;</span>
                <span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">].</span><span class="pl-n">r</span><span class="pl-o">=</span><span class="pl-n">i</span><span class="pl-o">-</span><span class="pl-mi">1</span><span class="pl-o">&gt;</span><span class="pl-mi">0</span><span class="pl-o">?</span><span class="pl-n">i</span><span class="pl-o">-</span><span class="pl-mi">1</span><span class="pl-o">:</span><span class="pl-n">n</span><span class="pl-p">;</span>
        <span class="pl-p">}</span>  
        <span class="pl-kt">int</span> <span class="pl-n">j</span><span class="pl-o">=</span><span class="pl-mi">1</span><span class="pl-p">,</span><span class="pl-n">ni</span><span class="pl-o">=</span><span class="pl-mi">1</span><span class="pl-p">;</span>  
        <span class="pl-k">while</span><span class="pl-p">(</span><span class="pl-n">now_n</span><span class="pl-o">&gt;</span><span class="pl-mi">1</span><span class="pl-p">){</span>
                <span class="pl-kt">int</span> <span class="pl-n">a</span><span class="pl-o">=</span><span class="pl-mi">0</span><span class="pl-p">;</span>
                <span class="pl-k">while</span><span class="pl-p">(</span><span class="pl-n">a</span><span class="pl-o">&lt;</span><span class="pl-n">m</span><span class="pl-o">-</span><span class="pl-mi">1</span><span class="pl-p">){</span>
                        <span class="pl-n">ni</span><span class="pl-o">=</span><span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">ni</span><span class="pl-p">].</span><span class="pl-n">l</span><span class="pl-p">;</span>
                        <span class="pl-n">a</span><span class="pl-o">++</span><span class="pl-p">;</span>
                <span class="pl-p">}</span>
                <span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">ni</span><span class="pl-p">].</span><span class="pl-n">r</span><span class="pl-p">].</span><span class="pl-n">l</span><span class="pl-o">=</span><span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">ni</span><span class="pl-p">].</span><span class="pl-n">l</span><span class="pl-p">;</span>
                <span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">ni</span><span class="pl-p">].</span><span class="pl-n">l</span><span class="pl-p">].</span><span class="pl-n">r</span><span class="pl-o">=</span><span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">ni</span><span class="pl-p">].</span><span class="pl-n">r</span><span class="pl-p">;</span>
                <span class="pl-n">now_n</span><span class="pl-o">--</span><span class="pl-p">;</span>
                <span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;%d &quot;</span><span class="pl-p">,</span><span class="pl-n">ni</span><span class="pl-p">);</span>
                <span class="pl-n">ni</span><span class="pl-o">=</span><span class="pl-n">p</span><span class="pl-p">[</span><span class="pl-n">ni</span><span class="pl-p">].</span><span class="pl-n">l</span><span class="pl-p">;</span>
        <span class="pl-p">}</span>
        <span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;%d &quot;</span><span class="pl-p">,</span><span class="pl-n">ni</span><span class="pl-p">);</span>
        <span class="pl-k">return</span> <span class="pl-mi">0</span><span class="pl-p">;</span>
<span class="pl-p">}</span>
</cpde></pre></div>